Primary activity measurements with 4pigamma NaI(Tl) counting and Monte Carlo calculated efficiencies.

Details

Serval ID
serval:BIB_0695302DAE7A
Type
Article: article from journal or magazin.
Collection
Publications
Title
Primary activity measurements with 4pigamma NaI(Tl) counting and Monte Carlo calculated efficiencies.
Journal
Applied Radiation and Isotopes
Author(s)
Nedjadi Y., Spring P., Bailat C., Decombaz M., Triscone G., Gostely J.J., Laedermann J.P., Bochud F.O.
ISSN
0969-8043
Publication state
Published
Issued date
2007
Peer-reviewed
Oui
Volume
65
Number
5
Pages
534-538
Language
english
Abstract
The radioactive concentrations of (18)F, (88)Y and (152)Eu solutions and the activity of (222)Rn gas ampoules are measured using a primary method involving 4pigamma NaI(Tl) integral counting with a well-type NaI(Tl) detector and efficiencies computed by Monte Carlo simulations. The simulations use the GEANT code coupled with a routine (sch2for), which generates randomly the decay paths and emissions depending on the decay scheme parameters. The resulting radioactive concentrations of (88)Y, (152)Eu and (18)F are found to agree with those measured with other primary measurement methods, such as 4pi (beta, e, X)-gamma coincidence counting or liquid scintillation counting. Results of the determination of the activity of (222)Rn gas ampoules by this method also match the results of an absolute standardisation technique in which radon is condensed onto a cold surface and its alpha-emissions are detected through an accurately specified solid angle.
Keywords
Monte Carlo Method, Radioisotopes, Reference Standards, Scintillation Counting
Pubmed
Web of science
Create date
25/04/2008 16:53
Last modification date
20/08/2019 12:28
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